/Engine/Source/Runtime/GeometryCore/Public/VectorUtil.h
solid angle at point P for triangle A,B,C
namespace UE { namespace Geometry { namespace VectorUtil { template<typename RealType> RealType UE::Geometry::VectorUtil::TriSolidAngle ( [TVector](API\Runtime\Core\Math\TVector)< RealType > A, [TVector](API\Runtime\Core\Math\TVector)< RealType > B, [TVector](API\Runtime\Core\Math\TVector)< RealType > C, const [TVector](API\Runtime\Core\Math\TVector)< RealType > & P ) } } }